CTICasesGlenn Shunt Conduit Fistula
Imaging findings
In a patient with hypoplastic left heart syndrome who had a biidirectional Glenn shunt, CT shows the SVC-to-left PA conduit is thrombosed and completely filled with air. A large pseudoaneurysm of the aortic arch and surrounding phlegmon are present, indicating a fistula between the airway and the graft.
Key takeaways
Air filling of a thrombosed synthetic Glenn shunt conduit or pulmonary artery graft is a catastrophic complication indicating the development of an airway-to-pulmonary artery fistula, often associated with recurrent localized infection or pseudoaneurysm.
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